 | | Re: Ooops! NXT Software Comparison correction / I2C Messaging Speed
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Hi Dick, (...) actually I2C runs at something close to 12kHz in the LEGO firmware (I forgot the exact value). Jürgen (17 years ago, 5-Sep-07, to lugnet.robotics.nxt)
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| | Electronics Prototyping with the LEGO NXT
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Hi Folks, I've been exploring various ways to use the LEGO NXT in enhancing electronics through Robotics and I've just posted a short video on the subject matter at my blog (URL). I'll be writing an eZCIRCUITs application note on the construction (...) (17 years ago, 5-Sep-07, to lugnet.robotics.nxt)
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| | RE: Ooops! NXT Software Comparison correction / I2C Messaging Speed
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(...) I wasn't aware of this firmware limitation. I could not duplicate it when using the ROBOTC firmware. I've done three different test runs of 500K messages each with perfect results each time. Each test run used a different sensor. The delay (...) (17 years ago, 5-Sep-07, to lugnet.robotics.nxt)
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| | leJOS NXJ 0.4.0 is Released
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NXJ version 0.4.0 now includes a full suite of graphical widgets in the java.microedition.lcdui package, a multi-level menu system, wireless NXT to NXT communications using Bluetooth, primitive wav file sound support, and many more enhancements. (...) (17 years ago, 5-Sep-07, to lugnet.robotics.nxt)
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| | US-Sensor I2C-address
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Hello Community, is there currently a known way to change the I2C-Address of the Ultrasonic sensor ? What's the magic with the ADAP ? Thanks for some informations Bye Christian (17 years ago, 4-Sep-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: the LEGO CNC-Machine
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"daniel" <daniel.formatc.at.gmail.com> wrote in message news:Jnuwon.JGG@lugnet.com... (...) Glad to hear that! Of course, I am somewhat disappointed. I thought you would come up with some really awesome design. (...) solution. Feed rate vs chip (...) (17 years ago, 4-Sep-07, to lugnet.robotics.rcx)
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| | Re: the LEGO CNC-Machine
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(...) no no, i will only use the indirect control for the main spindle, which will use the power motor. the axis drives will use normal technic motors (from the mindstorms set). right now i'm designing some cutters, see my other thread in the (...) (17 years ago, 4-Sep-07, to lugnet.robotics.rcx)
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| | Re: the LEGO CNC-Machine
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"daniel" <daniel.formatc.at.gmail.com> wrote in message news:JnuoJz.86D@lugnet.com... (...) I am trying to see this in my head. Your driving a polarity switch with a motor and the switch will control the power motor? Is this on each axis? I am (...) (17 years ago, 4-Sep-07, to lugnet.robotics.rcx)
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| | Re: the LEGO CNC-Machine
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(...) right, that's why i'm planning to have one rcx output drive a polarity switch that connects the power motor to a normal battery box / 9v adaptor without current limiter. (17 years ago, 4-Sep-07, to lugnet.robotics.rcx)
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| | Re: the LEGO CNC-Machine
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"daniel" <daniel.formatc.at.gmail.com> wrote in message news:Jnu7yv.K26@lugnet.com... (...) current than the RCX can supply. The smaller geared motors have a much slower rpm at their output. (17 years ago, 4-Sep-07, to lugnet.robotics.rcx)
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| | Re: the LEGO CNC-Machine
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the motor in the movie is called a "power motor", you can read about it here: (URL) the large black one with red axleholes. i'll be using it as the spindle. i guess the gearing in my axes is still too fast for the cutter, if i have to redesign the (...) (17 years ago, 4-Sep-07, to lugnet.robotics.rcx)
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| | Re: the LEGO CNC-Machine
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"Bob Fay" <rgfay@earthlink.net> wrote in message news:Jnt8MF.n84@lugnet.com... (...) This is one of mine. Note the left worm is out if sequence by 1/4 turn with the other two. this is putting pressure on the dual racks to remove the backlash. (URL) (...) (17 years ago, 3-Sep-07, to lugnet.robotics.rcx)
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| | Re: the LEGO CNC-Machine
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"daniel" <daniel.formatc.at.gmail.com> wrote in message news:Jnt54J.Jpy@lugnet.com... (...) I liked the technic beams because I could lock them together. I imagine double wide bricks can make a good foundation. Put an ocassional beam in to allow (...) (17 years ago, 3-Sep-07, to lugnet.robotics.rcx)
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| | Re: the LEGO CNC-Machine
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(...) thanks! it's nice to get that kind of feedback from someone who's not new to lego mills :) (...) yes. you can see it in my diagrams again, the cutter hangs over the table pretty far: (URL) i'm not sure yet how exactly i will manage to make it (...) (17 years ago, 3-Sep-07, to lugnet.robotics.rcx, FTX)
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| | Re: the LEGO CNC-Machine
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"daniel" <daniel.formatc.at.gmail.com> wrote in message news:Jnszy4.7qA@lugnet.com... (...) very well done. Your slider design is also very good. The table is supported in all directions. You have made it simple and effective. Good engineering! (...) (17 years ago, 3-Sep-07, to lugnet.robotics.rcx)
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| | Re: pbLua GUI ???
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(...) This is starting to look pretty promising as a standard IDE. I will do my part and install Eclipse here and get the instructions updated from Christian's instructions. Once we get a decent IDE the pbLua system may be almost ready for "everyone (...) (17 years ago, 3-Sep-07, to lugnet.robotics.nxt)
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| | Re: pbLua GUI ???
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(...) ;-) currently I'm extending Eclipse with simple terminalprogram and pbLuaAPI... With pbLuaAPI-Wrapper(maps pbLua nxt.* to native Lua routines) you can test and run pbLua code at local PC before transfering to NXT... Christian (17 years ago, 3-Sep-07, to lugnet.robotics.nxt)
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| | Re: the LEGO CNC-Machine
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i uploaded a little video of the first tests with the x and y axes. check it out here: (URL) trying out wax and soap as cutting materials, i'll report again when i'Ve tested some more :) (17 years ago, 3-Sep-07, to lugnet.robotics.rcx)
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| | Re: pbLua GUI ???
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Zitat von Christian Mock <chrimo-@-moccy.xdsnet.de>: (...) pbLua/NXT support there is rather sparse, isn't? Matthias "why don't I do that myself, though?" ---...--- This message was sent using IMP, the Internet Messaging Program. (17 years ago, 3-Sep-07, to lugnet.robotics.nxt)
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| | Re: Ooops! NXT Software Comparison correction
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I can further manipulate the numbers for this timing test by using the enhanced standard firmware's support for adjusting a thread's priority. Here's the results when I tweak priorities: W/O LCD LCD Priorities ---...--- 50617 22608 40/5 63211 27375 (...) (17 years ago, 2-Sep-07, to lugnet.robotics.nxt)
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